141647-83-8Relevant articles and documents
Synthesis of γ-alkylidenebutenolides by formal [3+2] cyclizations of 1,5- and 2,4-bis(trimethylsilyloxy)-1,3,5-hexatrienes with oxalyl chloride
Freifeld, Ilia,Bose, Gopal,Eckardt, Tobias,Langer, Peter
, p. 351 - 355 (2007/10/03)
Lewis acid-catalyzed cyclizations of 1,5-bis(trimethylsilyloxy)-1,3,5- hexatrienes and 1,3,5-tris(trimethylsilyloxy)-1,3,5-hexatrienes with oxalyl chloride resulted in the formation of polyunsaturated γ- alkylidenebutenolides, while the cyclization of a 2
Synthesis of Lucidones
Lee, Hiok-Huang,Que, Yoon-Ten,Ng, Soon
, p. 453 - 456 (2007/10/02)
Reaction of 2-cinnamoyl-3-hydroxy-5-methoxy-1,4-benzoquinone (10) with acetic anhydride-dimethyl sulphoxide yielded (E)-4-(cinnamoylmethylene)-2-methoxybut-2-en-4-olide (4).Assignment of configuration of the exocyclic double bond in (4) is based on compar